Device and method for mixing, in particular dispersing

Patent metadata

Field	Value
Publication number	US-11059004-B2
Application number	US-201615567125-A
Country	US
Kind code	B2
Filing date	Mar 22, 2016
Priority date	Apr 17, 2015
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

A device ( 1 ) for mixing which comprises a housing ( 2 ) with at least one inlet ( 3 ). A first process region ( 4 ) mixes the supplied substances which are introduced via the inlet ( 3 ) while a second process region ( 5 ) discharges the mixture via an outlet ( 6 ). A first gap-forming element ( 7 ), preferably a rotor, is assigned to the first process region ( 4 ) and comprises openings ( 8 ), and a second gap-forming element ( 9 ), preferably a stator, is assigned to the second process region ( 5 ) and corresponds with the first gap-forming element ( 7 ), wherein the second gap-forming element ( 9 ) comprises openings ( 10 ). At least one of the gap-forming elements ( 7, 9 ) is rotatable relative to the other gap-forming element ( 7, 9 ). The openings ( 8, 10 ) of the first and second gap-forming elements ( 7, 9 ) are arranged such that a mixture passes through the openings from the first into the second process region.

First claim

The invention claimed is:

1. A device for mixing comprising:
a housing with at least one inlet,
a first process region for mixing and dispersing supplied materials, and the materials are introduced into the first process region through the at least one inlet,
a second process region for diverting a mixture to an outlet,
an outwardly facing surface of a first gap forming element directly facing and partially defining the first process region and the first gap forming element comprises a plurality of openings,
an inwardly facing surface of a second gap forming element directly facing and partially defining the second process region and cooperating with the first gap forming element, and the second gap forming element comprises a plurality of openings,
wherein at least one of the gap forming elements is designed so as to be rotatable about an axis of rotation relative to the other gap forming element,
the plurality of openings of the first gap forming element and the plurality of openings of the second gap forming element are arranged in such a manner that the plurality of openings do not overlap and the mixture, produced from the supplied materials, is conductible from the first process region into the second process region through the plurality of openings in the first and second gap forming elements such that the mixture only passes from the plurality of openings of the first gap forming element to the plurality of openings of the second gap forming element through a gap formed between the first and second gap forming elements,
the first gap forming element is a rotor and the second gap forming element is designed as a static separating device, and
at least one grinding tool, which is designed for dispersing the materials introduced in the first process region, is arranged on at least one of the first gap forming element and the housing, and
the plurality of openings of the first and second gap forming elements extend along a length of at least 50% of the length of the first gap forming element in the first process region.

2. The device according to claim 1 , wherein at least one gap is formed between the housing and the first gap forming element.

3. The device according to claim 1 , wherein the first gap forming element surrounds the second gap forming element, and the gap between the gap forming elements is a maximum of 3 mm.

4. The device according to claim 1 , wherein the first gap forming element extends along a length of the first process region.

5. The device according to claim 1 , wherein grinding bodies, the forwarding of which into the second process region is preventable by the gap between the gap forming elements, are pourable into the first process region.

6. The device according to claim 1 , wherein openings in the static separating device are smaller than the minimum diameters of grinding bodies.

7. The device according to claim 1 , wherein both gap forming elements are formed in one of a cylindrical or a conical manner.

8. The device according to claim 1 , wherein the housing comprises a pump housing or the housing is connected to a pump housing, and a pump is arranged in the pump housing.

9. The device according to claim 1 , wherein the gap between the gap forming elements extends over a length of at least 50% of the length of the first gap forming element in the first process region.

10. The device according to claim 8 , wherein the pump is driven by a shaft which, at the same time, drives one of the gap forming elements.

11. The device according to claim 8 , wherein the plurality of openings of the first gap forming element and the plurality of openings of the second gap forming element are arranged in such a manner at least one of first sections between two adjacent openings of the plurality of openings of the first gap forming element and at least one of second sections between two adjacent openings of the plurality of openings of the second gap forming element overlap and form a gap portion with a longitudinal extent and a transverse extent.

12. The device according to claim 11 , wherein the longitudinal extent lies within a range of half of the transverse extend and three times the transverse extend.

Assignees

• Buehler Ag

Inventors

• Nater Eduard
• Sturm Achim Philipp

Classifications

• B02C17/161 Primary

  Arrangements for separating milling media and ground material · CPC title

• B01F27/412

  provided with ribs, ridges or grooves on one surface · CPC title

• B01F27/2712

  provided with ribs, ridges or grooves on one surface · CPC title

• B01F27/27

  Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices (the stirrers having a central axial inflow and a substantially radial outflow B01F27/81) · CPC title

• B01F27/2123

  Shafts with both stirring means and feeding or discharging means · CPC title